When you remove the plug from the main board to the power board the back-lights all start flashing, what voltage should the BLU on/off be.
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Re: Samsung 50" TV flashing power light
0 research done I like it. Bl should be I believe 1.5-3v or so.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/ -
Re: Samsung 50" TV flashing power light
Is this BLU on/off the same as the Pl on/off, because when I check the circuit I get a dead short between the two pinsComment
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Re: Samsung 50" TV flashing power light
Is that with the Mb unplugged ?Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Samsung 50" TV flashing power light
Posting pictures of the back of your tv showing the boards with clear pictures may help you more with fixing your problem
Also model number of the tv please
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Re: Samsung 50" TV flashing power light
Thanks for the offer but all I wanted was an answer to the question.yes that was with the board laying on the bench.Comment
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Re: Samsung 50" TV flashing power light
Pffft. How would you suppose we should help you without any model number or pics of the TV ? Is it a LED or a LCD or what?
If it is a LED, Id be checking the LEDs in the panel first.
As for your question: I am not so sure you should be poking around that thing too much without knowing very basic things what PSon and BLon pins actually do.Last edited by CapLeaker; 09-26-2016, 05:44 AM.Comment
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Re: Samsung 50" TV flashing power light
I have worked on Radar systems and naval missiles systems and I have been fixing TVs for sometime but from time to time some thing new comes out that one needs some information on and this is the case.And in the first comment I said that when the Main Board is disconnected the LED are flashing.Comment
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Re: Samsung 50" TV flashing power light
So the backlights are flashing.
What is the power supply board part number? BN44-??????
Model number of the TV?
BL-ON (BLUON) is steady state DC. BL-ON is usually >2.5Vdc = ON, <1Vdc = OFF, BUT some of the SAMSUNG board uses 0.7Vdc = ON, <.2Vdc = OFF.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: Samsung 50" TV flashing power light
Hi budm, backlights are flashing with the MB disconnected. power supply board is a BN44-00617A, Model number UE50F6200AKXXUComment
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Re: Samsung 50" TV flashing power light
Research how to test led backlights.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Samsung 50" TV flashing power light
Hi Budm can you simulate the BLU voltage with 3 batteries, for test purposesComment
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Re: Samsung 50" TV flashing power light
take a 1k ohm resistor and jump 5V STBY to BLonComment
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Re: Samsung 50" TV flashing power light
Would be nice if someone said some thing " we do not know about this problem" or just go away or is this system not working anymoreComment
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Re: Samsung 50" TV flashing power light
easy for you to say... we don't even have a picture of your PSU so we have something to look at. I think you should know with 114 posts on your account, that we need pics. Other than that it's just guessing around.
Your TV is a LED. You may have a bad LED and nothing wrong with the PSU. In order to test the LEDs, you have to take the panel apart. There are tons of threads here about that.Comment
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Re: Samsung 50" TV flashing power light
Yes have taken the panel apart and have said before all the LED are working I can see the all flashing, I think it is the Power board but cannot find and diagrams, there is no bulging capacitors.Comment
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Re: Samsung 50" TV flashing power light
Does anyone have a diagram for a BN44-00617A, this is from a Samsung UE50F6200AKXXU television, or know where to get oneComment
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Re: Samsung 50" TV flashing power light
Check google or Toms site.Please Do Not PM My Page Asking For Help Badcaps Is The Place For Advise, Page Linked For Business Reasons Only. Anyone Doing So Will Be Banned Instantly !
https://www.facebook.com/Telford-Tel...7894576335359/Comment
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Re: Samsung 50" TV flashing power light
Have already checkedComment
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Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
[HELP] Acer AN515-55 (LA-J871P Rev: 1B) – Board won't power on after GPU investigation – Suspecting Super I/O or PCH
Hi everyone,
I'm working on an Acer Nitro 5 unit with the following specs:- Motherboard: LA-J871P Rev: 1B
- Model: Acer AN515-55-59MT
- S/N: NHQ7JAL00403906A973400
- SNID: 03902728734
Initial Issue
The laptop initially presented graphic issues and driver failure (Code 43) for the GPU.
After preventive maintenance (cleaning, thermal paste, etc.), it powered on normally. We disassembled it again to inspect the GPU, reassembled... -
Hey everyone,
This power supply board is hard to find but there are repair kits available. This board had a blown fuse, FP801S, blown PFC MOSFET, QP802CS and ceramic cap, CP809. I replaced them with parts I already had and tested the rest of the parts that would've come in the repair kit and they were fine. I powered the board up on the bench expecting, in typical Samsung power supply board fashion, to see all my output voltages but, nothing. 0 volts on CNL801, CNM801 and CNT801. The only thing I have is 170vdc on the filter caps. No standby voltage either.
Anybody... -
I did not have any 27uf @ 50 volt capacitors but one nice thing is that it has enough room for two capacitors in parallel a 22uf and a 4.7uf @ 50 volts 22 plus 4.7 equals 26.7uf which so very close to 27uf I will show some pictures of it sometime tomorrow
This is one of the shit est boards I seen in a very long time and it was the daughter board the traces just lifting off the board I had to use the capacitor leads to repair the the traces and the main board is not any better because I had to repair several traces for the daughter board to the main board
After all of... -
ONN 100012588
Issue: No Power, Then Rebooting After Main Board Change
Short answer: replace main board and power board
Technical answer: replace main board and Q306 & Q307 on power board.
Long answer:
TV wouldn't turn on. Power switch was fine which means the main board isn't processing the power on signal. Replaced main board. TV turns on now but randomly reboots. Bad main board? EEPROM? Tried to pull main board and got a shock touching the corner of the board. That's weird. C334 (450V 10uf) capacitor is still holding a high charge....
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